Centro de Saúde do Couro Cabeludo - Polytar Saltar para o conteúdo
Dandruff on a Bald Head: Why It Happens and How to Treat a Flaky Scalp
itchy scalp polytar shampoo

Caspa numa cabeça calva: porque surge e como tratar um couro cabeludo com descamação

Itchy Scalp and Hair Loss: Why They Can Happen Together and When to Seek Help
eczema itchy scalp

Comichão no couro cabeludo e queda de cabelo: porque podem ocorrer em simultâneo e quando procurar ajuda

How to Prevent Dandruff: Scalp Care, Hair Washing and Managing Flare-Ups
coal tar shampoo itchy scalp

Como Prevenir a Caspa: Cuidados com o Couro Cabeludo, Lavagem do Cabelo e Gestão de Crises

What Is Dandruff? Causes, Symptoms and How to Manage It
coal tar shampoo itchy scalp

O que é a caspa? Causas, sintomas e como tratá-la

How to Treat Dermatitis of the Scalp: Understanding Your Treatment Options
coal tar eczema

Como tratar a dermatite do couro cabeludo: compreender as suas opções de tratamento

Why Does My Scalp Feel Like It's Burning? Common Causes, Relief and When to Seek Help
eczema itchy scalp

Porque é que sinto o couro cabeludo a arder? Causas comuns, alívio e quando procurar ajuda

Why Is My Scalp Bleeding? Common Causes, Scratching, Psoriasis and When to Seek Help
itchy scalp polytar shampoo

Porque é que o meu couro cabeludo está a sangrar? Causas comuns, coceira, psoríase e quando procurar ajuda

Why Do I Have Yellow Flakes on My Scalp? Causes, Treatment and When to Seek Help
coal tar shampoo eczema

Porque tenho escamas amarelas no couro cabeludo? Causas, tratamento e quando procurar ajuda

Why Is My Scalp Sore and Itchy? Common Causes, Relief and When to Seek Help
coal tar shampoo itchy scalp

Porque é que tenho o couro cabeludo dorido e com comichão? Causas comuns, alívio e quando procurar ajuda

Red Spots on the Scalp: Common Causes, Symptoms and When to Seek Help
coal tar eczema

Manchas vermelhas no couro cabeludo: causas comuns, sintomas e quando procurar ajuda

Seborrhoeic Dermatitis of the Scalp: Symptoms, Causes and Treatment Options
coal tar polytar

Dermatite Seborreica do Couro Cabeludo: Sintomas, Causas e Opções de Tratamento

Can Seborrhoeic Dermatitis Cause Hair Loss? Understanding Shedding, Regrowth and Recovery
coal tar coal tar shampoo

Pode a dermatite seborreica causar queda de cabelo? Compreender a queda, o recrescimento e a recuperação

Can Seborrhoeic Dermatitis Be Cured? Understanding Long-Term Management
polytar Seborrhoeic Dermatitis

A dermatite seborreica tem cura? Compreender o tratamento a longo prazo

Scalp Psoriasis vs Seborrhoeic Dermatitis: How to Tell the Difference
psoriasis Seborrhoeic Dermatitis

Psoríase do couro cabeludo vs Dermatite seborreica: Como distinguir

When Anti-fungal Shampoos Help Scalp Conditions, and When They May Not
coal tar shampoo eczema

Quando os champôs antifúngicos ajudam em problemas do couro cabeludo, e quando podem não ajudar

What is sebopsoriasis? Symptoms, scalp signs and treatment options explained
psoriasis Seborrhoeic Dermatitis

O que é a sebopsoríase? Sintomas, sinais no couro cabeludo e opções de tratamento explicados

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A nossa equipa de especialistas

Os nossos conteúdos têm o apoio de um painel de dermatologistas e tricologistas com conhecimentos especializados em saúde do couro cabeludo.

Marta Teixeira

Marta Teixeira IAT, BN (Hons), RN (Adult), PGCert, MSc

Marta is a highly qualified Prescribing Clinical Trichologist and NHS Dermatology Specialist Nurse, with extensive experience diagnosing and treating scalp conditions such as psoriasis and dandruff. She is one of the few UK trichologists qualified to prescribe medication, allowing her to deliver evidence-based, medical-grade treatments. Alongside her clinical work, Marta is also a lecturer in trichology and hair sciences, contributing to research and education in scalp health.

Amy Hunt

Amy Hunt Tricologista da Polytar

Amy é tricologista e cabeleireira qualificada, tendo recebido formação numa das principais instituições de ensino em tricologia, o Institute of Trichologists, em Harley Street. Tem mais de seis anos de experiência no setor do cabelo, durante os quais conversava diariamente com clientes sobre problemas comuns do cabelo e do couro cabeludo observados no salão. Foi através destas experiências reais que desenvolveu uma forte paixão por ajudar as pessoas a compreender o que estavam a sentir e a melhor forma de responder às suas necessidades.

Perguntas frequentes

Polytar is formulated to help manage scalp conditions such as psoriasis, eczema, dandruff, and seborrhoeic dermatitis.

For best results, use Polytar 1-2 times per week or as directed by your healthcare provider.

Polytar is designed for use 1-2 times a week, but for daily concerns, consult with your dermatologist.

Yes, Polytar is generally safe for colour-treated hair, but a patch test is recommended.

Polytar has a distinctive coal tar scent, which fades after rinsing.

Leave the shampoo on for 3-5 minutes before rinsing for maximum effectiveness.

Polytar is suitable for adults and children over 12 years of age. Consult a healthcare provider for younger children.

Yes, Polytar can be used alongside other treatments, but consult your dermatologist to ensure compatibility.

Talk to your GP before using Polytar if you are pregnant or breastfeeding.

*Do not use if you are in the first trimester of pregnancy.


Coal tar solution 4% (w/w)

Sodium Lauryl Ether Sulfate, Cocamidopropyl Betaine, Disodium Phosphate Dihydrate, Citric Acid Monohydrate, Benzyl Alcohol (1% w/w), Macrogol 150 Distearate, Hexylene Glycol, Oleyl Alcohol, Polyquaternium-10, Fragrance oil (contains: Linalool, Alpha-Isomethyl ionone (3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one), Citronellol, Hexyl cinnamal (Hexyl cinnamaldehyde), Benzyl salicylate, Benzyl benzoate, Coumarin, Eugenol, Geraniol, Hydroxycitronellal, Isoeugenol, Limonene, Benzyl alcohol, Amyl cinnamal, Amylcinnamyl alcohol, Anisyl alcohol (Anise alcohol), Benzyl cinnamate, Cinnamal, Cinnamyl alcohol, Citral, Farnesol) and Purified Water.

You have had an allergic reaction to coal tar or any other listed ingredients.

You have infected, open, or damaged skin or pus-filled blisters (pustules).

You are under 12 years old.

You have sensitive, broken, or inflamed skin, as it may cause irritation.
Discontinue use if irritation develops.


Contact with eyes occurs rinse thoroughly with clean water.

You are exposed to strong sunlight or sunbeds, as coal tar may increase sun sensitivity.

You are wearing clothes or using fabrics (like bedding) exposed to Polytar, as it may cause staining or increase flammability.

You are taking medications that increase sun sensitivity, such as:

  • Thiazide diuretics (water tablets)
  • Tetracycline antibiotics
  • Phenothiazine tranquilisers